Oil saver



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1,4625@ C. F. RIGBY OIL SAVER Filed Sept. 24, 1919 2 Sheets-Sheet 2INVENTOW .July 2.4, 1923.

A'FIE;

45 )L with an upstanding rim 4 and an inner, an-

Patented July 241, i923.

" intatte CLARK F. RFGBY, OF BUTLER, PENNSYLVANIA.

' OIL SAVER.

Application filed September 24, 1919. Seriallllo. 325,987.

T0 all who/mJ t may concern.'

` Be it known that l, CLARK F. RIGBY, a cit-` izen of the United States,and a resident of Butler, in the county of Butler and State ofPennsylvania, have made a new and useful Invention in Oil Savers, ofwhich the following is a specification.

My invention relates to oil savers for oil wells and consists of adevice to be attached to the casing head at the well discharge. The mainobject of my invention is to avoid waste inthe ilow of oil at the mouthof the well and my present invention consists largely of improvements onthe oilv savers shown in previous United States Letters Patent Nos.696,747, 983,314 and 1,152,548 all issued to me. I desire to improve theyconstruction of the packing screw shown inl those patents, also tovfacilitate the assembly of the oil saver with the casing head when thewell is operating.- My previous savers were subject to leakage'afterwearand I desire to overcome that defect in the present construction.Another object of my invention is to adapt my improved casing headclosure for application to old casing heads altho my complete new oilsaver includes a novel casing head as well as new closure means.

rihe means by which attain these objects are illustrated in theaccompanying drawings in which Fig. 1 is a vertical section thru a welldischarge which is equipped with my improved oil saver; Fig. 2 is ahorizontal section on line 2 2 of Fig. 1; Fig. 3 is a vertical sectionthru the packing screw; Fig. 4 is a horizontal section thru thel screwhandle taken on line 4-4 of Fig, 1 and Fig. 5 is a section similar toFig. 1 but showing the well closure applied to an old casing head.

Shhown in Fig. v1 is the top section l of the well casing, connected atits upper end toa casing head 2 which is provided with the usualdischarge pipes 3. Head 2 is provided nular packing seat 5 which carriesa strip 5i of packing material.

Rim 4 and seat 5 enclose andsupport the base 6 of the casing headclosure which is provided witha bottom disk 7 detachably secured to base6 by screws 8. Disk 7 and rim 4 are threaded at 9 to aord means forobtaining a tight union between head 2 and base 6. Threads 9 areinterrupted as indicated in Fig. 2,

alternate sectors 'of the I threads being cut away toA form abreechblock or bayonet joint-which permits the closure to be seated inthe casing head and by a `partiall revolution to be quickly secured inplace.

Base 6 is conically shaped similar to the corresponding parts of the oilsavers in the above mentioned patents and this shaping permits the useof a| new base with an old casing head. Such an assembly is illustratedin Fig. 5 in which the closure disk 7 has been removedand the bottom ofbase 6 rests directly upon packing 5 and the joint is tlghtened by' useof screws 10 thru rim 4.

Base 6 and rim 7 are divided vertically on their diameter and thedivided parts of the base are hinged to each other thru jaws 11 on onepart and lug 12 on the other part and pin 13. Lug 12 terminates in athread- 75 ed .shank 14 and jaws 11 terminate in a spring seat 15surrounding shank 14. A coil spring is seated in part 15of jaws 11 andis adjustably compressed by same and nut 17 on shank 14 and functions tohold the divid- 'S0 ed parts .of the base in contact with each other. Itwill be understood that pin 13 must wear in jaws 11 and lug 12 beforethere is opportunity for the action of spring 16. The' opposite sides ofthe divided base are S5 provided with locking lugs 17 and 18respectively and a locking bolt 19. When the base is applied to the wellcable 20 and casing head 2, and bolt 19 is tightened, the lattercooperates withl spring 16 to forni a tight De joint thruout the meetingsurfaces of the divided closure irrespective of wear along same or atthe hinge. j

When the divided parts of. base 6 are united they form a vertical,central, threaded chamber `21 which is adapted to receive a packingscrew 22. Screw 22 is hollow thruout and formed of two halves as bestshown in Figs. 3 and 4 and is provided with a vertical passage 23 thruits stem for the well 10o cable20. Passage23 is recessed at 23a toreceive lubricating material. rlhe integral, hollow handles 25 of,lscrew 22 also form a chamber for the reception of grease or otherlubricant. lt is custonary to lubricate the cable at the packing screwby frequent applicationof an ordinary oiler. This is a wasteful practiseand is often neglected when needed, resulting in unnecessary frictionand wear on the sliding surface of the 11e cable. The presentconstruction of the screw 22 and its use as a grease receptacle insurescontinuous lubrication of the cable andalso reduces the amount ofmaterial required for the handles and consequently the weight and costYthereof. Packing material 24 is located in chamber 21 and maybecompressed to any extent desired by screwing down screw 22.

The casing 'head closures in above' mentioned patents are either appliedto the cable before the 'latter is inserted in the well or utilize aremovable sector in one side for insertion of the cable into the oilsaver. The present arran ment of the hinged halves and the breec-blockbase permits a rapid assembly Aof the closure with the casing head andthe cable. A quickly applied and quickly detachable saver is of primeimportance because of the oil saved and the time' v gained by rapidassembly and disassembly.

This isvan operation which may be repeated many times a day, therefore aslight reduction in the time necessary amounts to a large economy in theaggregate. J

1. In a well closure device, a packing chamber, a vertically dividedscrew mem ber adapted to compress packing in said chamber and having avertical. passage for a well cable and substantially horizontal,internal recesses for lubricant adjacent said passage.

for each operation- 2. In an oil saver, a vertically divided casingclosure,lraving a `central threaded passage contracted to form a packingabutment, hollow complementary T-shaped members together formin aT-shaped packing compressor provide with a through cable passage incommunication with the chamber'v formed by the compressor lcross arms. s

3. In an oil saver, a central, vertically divided casing closure formedwith a central cable passage, a vertically split screw plug, having athrough cable way and hollow cross arms in open communication with saidcable way serving as a compressor Jfor said packing and a lubricantreservoir.

4. In an oil saver, a vertically divided casing closure formed with avertical cable passage, a hinge connecting the divisions of said closureat one side thereof, lockin means for the other side and a T-shape plugthreaded into said cable passage having a through cable way providedwith a lubricant pocketV and having hollow cross arms forming alubricant chamber in open communication with said cable way.

In testimony whereof I have hereunto subscribed my hand this 16th dayofSeptember, 1919.

'CLARK F, RIGBY.

packing in said passage and-

